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E. M. OORYELL.

STEAM AOTUATED VALVE. No. 327,069. Patented Sept. 29, 1885.

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k @QA/M- UNITED STATES PATENT OFFICE.

EDWIN. M. OORYELL, OF BROOKLYN, NEW YORK.

STEAM-ACTUATED YALVE..

QPECIFICATION forming part of Letters Patent No. 327,069, datedSeptember 29, 1885.

Application filed December 5, 1984.

To all whom it may concern:

Be it known that I, EDWIN M. OORYELL, a citizen of the United States,and a resident'of Brooklyn, E. D., in the county ofKings and State ofNew York, have invented new and useful Improvements in Steam ActuatedValves, of which the following is a specification.

My invention relates to improvements in valve-gear of direct-actingsteam-engines, in which a supplemental piston carries or moves a valveto open or close the steam and exhaust ports of the engine, and isparticularly applicable to steam-pumps.

The objects of my improvements are, first, to admit steam to and exhaustit from alternate ends of the steam-cylinder by the movement of thevalve without the intervention of rods or tappets coming in contact withany part of the piston or rod or any attachment thereto; second, toprovide for the movement ofthe valve without permitting metal to strikemetal with sufficient violence to produce a noise; and, third, toprovide for the retardation of the steam-piston at the beginning of itsstroke, and for wide-open ports during the remaining portion of thestroke. I attain these objects by the mechanism illustrated in theaccompanying drawings, in WlllOl1 Figure l is a vertical section of theupper portion of a direct-acting steam-engine with its cylinder,cylinder-heads, and steam-piston, steam-chest or supplementarysteam-cylinder, supplementary piston, and valve, with my improvements ateach end of the chest, and in the small .ports near the ends of thecylinder. Fig. 2 is a vertical section of the upper part of the enginethrough the cylinder, one of the small ports before referred to, andsteam-chest.

The broken lines show where the sections are taken.

Similar letters refer to similar parts in both views.

A is the steam cylinder, B the steampiston, G the valve, D thesupplemental piston, and E the supplemental cylinder, of a direct-actingsteam-engine.

E is an auxiliary supplemental steam-cylinder. G is its piston, and Hits rod.

I is a port leading from the steam-cylinder A to the end of thesupplemental piston D, and having a branch, J, leading to the end of (Nomodel.)

the auxiliary supplemental cylinder F which is farthest from thesupplemental piston D.

K is a port leading from the steam-cylinder A or its main port to therod end of the auxiliary supplemental cylinder F.

\V hen piston B, having nearly completed its stroke from the oppositeend of the cylinder A, has passed port I, the live steam will issue fromthat port behind auxiliary supplemental piston G, and also behindsupplemental piston D. The latter will then be balanced, having livesteam at both ends but auxiliary supplemental piston G, being open tothe exhaust through port K, which connects with the (for the time being)exhaust end of the cylinder A, will be forced over, and the end of itsrod being in contact with supplemental piston D will cause it to move inthe same direction until the valve 0 has passed the steam-port of thatend and partially opened the exhaust of the other end of cylinder A,when live steam issuing from port I, and communication being made to theexhaust through port K, will force auxiliary supplemental piston G backto its original position, and the steam-piston B will begin itsreturn-stroke, its motion being retarded, by reason of the throttling ofthe steam by the partially-opened valve 0 until the piston has repassedport I, when, being opened to the exhaust at the 0pposite end, and beingurged by live steam through the port just opened by the passage of thesteam-piston, the supplemental piston will complete its stroke and openfully valve 0, which will so remain until its reversal takes place byreason of the steam-piston B passing port I at the opposite end of thecylinder.

\Vhen the supplemental piston is forced to the end of its stroke, it maypass over port I, completely closing it, and thus prevent any leakage ofsteam. This is practicable, because the space being filled withexhauststeam the supplemental piston by its momentum will contract it,compressing the steam to a pressure equal to or greater than the initialsteam pressure, and its subsequent reversal of motion being efl'ected bya separate piston the complete covering of the port does not prevent itsmovement, as would be the case were it dependent upon the action ofsteam to be admitted through port I.

The slow movement of the steam-piston at the commencement of the stroke,before re- 1. The combination, with a supplemental ferred to, is adecided advantage in the ap-' piston,D, not itself the main valve of theenplication of this engine to steam-pumps, as it gine, of auxiliarysupplemental steam-pistons gives the water-valves time to closegradually, G G, having rods or stems projecting into a 5 and thus avoidshock or jar and noise. The supplemental steam-cylinder, E, having noonly occasion for noise (caused by hard subdirect steam communicationwith the steamstances striking together)in this engine (methchest,substantially as shown. ods nowin use being adopted for the cushioning2. The combination of auxiliary suppleof the pistons) is when theauxiliary supplemental steam-cylinders F F, ports I J K, and I0mental-piston rod H strikes the supplemental auxiliary supplementalsteam-pistonsGG,hav-

pistoninstartingthelatter; but, asisapparent, ing rods or stems H H,with a supplemental they are in very close proximity to or actuallysteam-piston, D, notitselfthe main valve ofthe touching each other atthat time, and little or engine, whereby said supplemental steamno noisewillbe made by their coming together. piston is moved a port-ion of itsthrow, sub- 15 Ido not claim the supplemental piston which stantially asset forth.

carries or moves the valve, nor broadly claim 3. The combination, withsteamrylinder A an arrangement of ports by means ot'which the and pistonB, of supplemental steam-cylinder 7 supplemental pistonis actuated bysteam(t'rom E, supplemental steam-piston D, and port J, the cylinder orother source) being permitted whereby the supplemental steam-piston D is20 to enter behind one end or exhausting from the alternately balancedand made to complete its other end, nor theopening and closing of eitherstroke, as hereinbefore set forth. or both ends of its cylinder by thesupplemental In testimony that I claim the foregoing as my piston actingas its own valve, nor the admisinvention I have signed my name, inpresence sion or exhausting of steam from the ends of a of twowitnesses,tliis 2d day of December, 1884. k 2 5 supplemental cylinder bythe passage of the main piston over ports leading thereto. EDWVIN M.OORYELL.

I do not claim independent steam-pistons in combination with and actingupon a steam- Witnesses: valve; but WM. SEooR, 0 What 1 do claim asmyinvention, and desire JAS. D. BILLARD, Jr.

to secure by Letters Patent, is

